Watch.



.A. FRIEDMAN.

WATCH APPLICATION FILED JUNE 24, 1912.

Patented Nov. 12, 1912.

n wh'lh'eriit is the size the invention will be pointed out in the claims.

' and covers 2' and provements.

ADOLPH rmnnman, or

FORT WORTH, TEXAS.

- WATCH Specification of Letters Patent.

Patented Nov. 12, 1912 Application filed June 24, 1912. Serial No. 705,476.

To' all whom/it may concern:

Be it known that I, Aoonrrr FRIEDMAN, a citizen of thel United States, residin'g'at Fort Worth, in the county of Tar-rant and State of- Texas, have invented, certain new and useful Improvements -in Watches, of which the following is a, specification.-

My invention relates to watch cases and more particularly to interchangeable watch cases, and the obJectistO provide means n connection with -watch cases by which a smaller sized works can be mounted in a larger sized casing andvice versa where a watch case is already equipped with the im- The advantage is that the works of'a' watchcan be mounted in casings of different sizesl' The advantage to merchantsis that it will notbe necessary to carry so many sizes of watch cases in stock and the works can be mounted in a casing of the casing so that a purchaser will not have to wait until a casing can be ordered.

Other objects and advanta es will'be fully explained inthe following escr ption and more particularly Reference is had to the accompanying drawings which form a part of this application.

Figure 1 is a view the works of a watch, removed and only the frame of the works being shown. Fig. 2 lS a diagonal section of the watch frame and covers and the improved attachments. Fig. 3 is a face view of one of the interchangeable rings. Fig. 4: illustrates the construction of the stem extension, being views of both ends and a longitudinal section. Figs. 5 and 6 are plan and edge views respectively of an extension for lever-set watches.

Similar characters of reference are used to indicate the same parts throughout the several views.

A watch case of ordinary construction is shown. The casing has the main frame 1 3 screwed on the frame 1. The cover shown for the front of the watch consists of the bezel 4 and the glass cover 3, the bezel bein screwed on the :Erame 1. In the back of t e watch is mounted a ring which has on the outer face an interior annular shoulder 5 for supporting the works of the watch. Screws 6- are screwed into showing the back of the back cover being porting ring to the works and this ring 6 1s held in place by screws 11 ,and by the case 1. The ring. G'maybe called a false frame as it simply takes the place of the frame in carrying the works of the watch; and being smaller than the frame, will support and carry smaller works than can be the frameiof the works and clamp the supcarried by the real. frame. The ring 6 has an annular exterior shoulder 7 on its inner face which rests on watch. The ring 6 thus rests on the part 5 the real frame of the of the frame on which the works of the same size as the works would rest. A similar ring 8 is mounted on the front part of the works 'and rests on the part of the case 1 on which the works and the dial would ordinarily rest. The works and the dial rest on'an annular interior shoulder 9' on the outer face ofthe ring 8 and the ring 8- has an annular exterior shoulder 10 which rests on the easel The ring 8 may also be called a false frame as it serves as a sub-- stitute forthe real frame for holding the worksand the dial.

The screws 11 bind the ring -6' on the works and the ring 6 is clamped on the case 1 because the ring-8 is on the other side of the case 1 and the screws against the ring 8 and thus clamp ring 8 on the opposite side of the case 1 fromli and thus rings 6 and 8 and the works and the case 1 are all bound together by the screws 11. The rings 6 and 8 are thus supplemental frames and make it feasible and practicable to interchange watch cases with works of'difierent sizes. A fiat protecting ring' ll is provided to cover the joint between the'ring 8 and the dial 13. The ring 12 is held in place by the bezel 4. The ring 12 will prevent dust from entering the 11 draw the main, or a shoulder on the main, plate of the works works. An extension 14 for the watch stem is provided for use where the works mounted in a case are of a smaller size than the size of the case. The extension 14 has a cap or female portion 15 which receives the en of the original stem of secured on the watch stem in any suitable manner. The rings 6 and 8 are to be made in several sizes and the stem extensiori l i is tobe made in several lengths.

In lever-set watches, the interchangeable supplemental frames are used in the same the watch. The ex- 7 4 tension 14 is made detachable and may be the extension stem.

ing the case, the works of ing the interior shoulder What I claim, 1's,

1. The combination with a watch case and its works of supplemental frames, one supplemental frame being mounted on and engaging the back part of the watch case engaging the works and one supplemental frame being mounted on and engaging the front part of the works and held thereon by the works and the works of the watch being supported and carried in said supplemental frames.

2. The combination with a watch case and its works of supplemental frames, each supplemental frame having an annular exterior shoulder on its inner face the watch engagof the front ring of the watch and screws inserted in the works and engaging the interior shoulder Copies of this patent may be obtained for five cents each, by addressing the Washington, D. C. M

of the back ring of the watch for binding{ said supplemental frames on the works an the case.

3. Supplemental carriers for the works of watches consisting of a ring frame having an off-set engaging the back part of the watch case and an off-set engaged by the attaching screws of the works and of a ring frame having an oil-set engaging the front part of the watch ease and an off-set engaging the works of the watch, the works being carried by the supplemental frames.

4:. The combination its works of supplemental carriers for the works engaging the watch case and a stem extension mounted on the watch'stem for winding the Watch. a r

In testimony whereof, I set my hand in the presence of twoZvTitnesses, this 20th day of June, 1912.

ADOLPH FRIEDMAN. Witnesses:

A. L. JACKSON, B. Z. FRIEDMAN.

Commissioner of Patents,

with a watch case and 

